Wool-burring machine



Patented Oct. 9, 1888.

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UNITED STATES PATENT FFICE.

\VYMAN DEARBORN, OF BOSTON, MASSACHUSETTS.

WOOL-BURRING MACHINE.

SPECIFICATION forming part of Letters Patent No. 390,949, dated October9, 1888.

Original application filed January 27, 1887, Serial No. 225,627. Dividedand this application filed February 20, 1888. Serial No. 264,586. (Nomodel.)

To all whom it may concern.-

Be it known that I, WYMAN DEARBORN, of Boston, in the county of Suffolkand State of Massachusetts, a citizen of the United States, haveinvented a new and useful Improvement in Wool-Burring Machines, of whichthe following is a full, exact, and clear description, reference beinghad to the accompanying drawings, forming a part of this specification,in explaining its nature.

This application is asubdivision of the application filed January 271887 ,Serial No. 225, 627, in which application most of the details ofthe machine are explained and claimed so far as they are common to thetwo forms of vibrating dotfers or clearers, which are required to beused in burring wool according as the burrs are of one sort or another;and in said application the clearers employed for small burrs areclaimed. The general mechanism adopted for burriug wool by this methodis the mech' anism employed for what is usually known as the roller-ginin cotton; and the mechanism which I have preferred to employ is thesub-type of roller-gin, in which the armament of the roll is a belt,rather than an armament attached. directly to the surface of the roll.It has been found by experience that the best form of belt to beemployed in burring wool is a multiplied belt of canvas and indiarubher,the canvas of which is of the sort and size known as twelve-ouncehose-duck. This size of duck is a size which is not so well suited forginning cotton as a coarsergrade or one having a less number of threadsto the inch than is usual, and is what is called twelveounce hose-duck.

In the application referred to the sort of clearers which are describedand claimed are clearers with serrated edges employed to take out theburrs which are more or less common in California wool. For the largeburrsuch as the cockle-burr-a different form of clearer is desirable.

The drawings in this application corre spond to a considerable degreewith the drawings of the other application, Figures 5 and 6, and thelettering of the drawings is also similar.

Fig. 1 represents in section the working detail of a wool-burringmachine upon this plan,

and Fig. 2 represents in perspective a portion of these working-tools.

In the drawings, B is one of the rollers on which the belt is mounted,which serves to feed and hold the wool to the action of theburr-removing devices. This belt is marked 0, and it is moved by therevolution of the roller B downward past the edge of the resser-bar Ff.This presser-bar is a knifeedge presser-bar made in two pieces,detachaable from each other, as shown, of which the working edge f is ofsteel, preferably casehardened, and the body F is of iron. It will benoticed that the straightside 0f the presserbar is placed at about atangent to the circle in which the surface of the belt is revolved, andthat the beveled side is inclined to this tangent.

The clearers' are actuated in a nearly straight line past the edge ofthe presser-bar by means of the clearer-arms E, on which the upper oneis mounted,and by the connecting-rod D, upon which the lower one ismounted, and which is attached to these clearer-arms. The upper cleareris marked H. The lower clearer is marked H, and is slotted, as shown inFig. 2, at h, in order to allow the burrs to drop through. The clearer His bent backward at H toward the position of the moving belt, at

an angle of about thirty degrees with its body,

as shown in Fig. 1 and in Fig. 2. The lower end of this clearer isformed like a wire or with a blunt and rounded edge, and the lowerclearer, H, is also bent at a somewhat larger angle toward the movingbelt, and is formed upon its edge into a rounded working-edge. Thepresser-bar has its edge nearly, but not quite, sharp, not sufficient tobe a cuttingedge, but about as sharp as an edge-tool which has not beenground. It requires to be a thin smooth edge, as distinguished from asharp cutting-edge, and should be hardened.

It will be seen that by bending the edge of the upper clearer backwardor toward the the roll a recess is formed above the workingedge, whichis maintained during the full stroke of the clearer, and provides aspace into which the wool shall expand when the clearer is riding vonthe presser-bar, thereby preventing the wool from springing theworking-edge of the clearer from the presser-bar, and propresent case,what I claim as my invention,and I desire to secure by Letters Patent,is as follows:

1. The round'edged clearer H, having a straight body and a roundedworkingcr'ige bent backward therefrom at an angle of about thirtydegrees with the body,whereby a recess is formed above the working edgeof the clearer, substantially as and for the purposes described.

2. The combination of a roller,B',adapted to be revolved downward uponits front side, which roller is armed with a multiply surface of rubberduck of about the fineness of twelveounce hose-duck, a blunt chiseledgcprcsserbar which presents its edge adjacent to said duclccovering andhas its straight side toward the roller, and a clearer, H, which cleareris formed with a straight body and a curva turc from front to backadjacent to its working-edge at about thirty degrees angle with thebody, and with a rounded working edge, which clearer is adapted to bevibrated up and down past and adjacent to the point of nearest approachto the presser-bar and the armament of the roller, all substantially asdescribed.

\VYMAN DEARBORN.

In presence 01'- F. F. RAYMOND, 2d, 1*. Pi SMALL.

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